"The pipeline's construction is not only a violation of tribal treaty rights, but has the potential to cause more damage to sacred land," the letter reads. (Photo: Lorie Shaull/flickr/cc)

Five U.S. lawmakers, including Sen. Bernie Sanders (I-Vt.), on Thursday published an open letter (pdf) urging President Barack Obama to order an environmental and cultural review of the Dakota Access Pipeline before construction can continue, calling it an imperative measure for Indigenous rights and the climate.

"We are writing to respectfully request that you direct the Army Corps of Engineers to require a full environmental impact statement for the Lake Oahe crossing of the Dakota Access Pipeline that includes meaningful tribal consultation," the letter reads. In addition to Sanders, it was signed by Sens. Patrick Leahy (D-Vt.), Dianne Feinstein (D-Calif.), and Edward Markey (D-Mass.).

"Over the past several weeks, hundreds of Native American tribes have mobilized in unprecedented solidarity to draw attention to the pipeline's encroachment on sacred lands. Nationally, there has been a groundswell of opposition to the project," the letter continues. "The pipeline's construction is not only a violation of tribal treaty rights, but has the potential to cause more damage to sacred land. Until there has been full and meaningful tribal consultation, all pipeline permits and easements should be revoked or denied."

The lawmakers sent the missive after a federal appeals court on Sunday denied a request to halt construction, and the pipeline company Energy Transfer Partners vowed to continue building despite a request for a temporary moratorium from the U.S. Department of Justice.

Water protectors and tribal leaders have continually promised to keep protesting the pipeline; on Wednesday, activists from oil-impacted communities rallied outside the company's offices in Houston, Texas to "demand a clean world for future generations in our struggle to survive."

In addition to the risks the pipeline poses to Native American communities, Thursday's letter continues, it also threatens the stability of the climate.

"All fossil fuels infrastructure projects of this significance must be subjected to a test to consider the long term climate impacts. As such, there must be a serious consideration of the full potential climate impacts of this pipeline prior to the Army Corps of Engineers approving any permits or easements for the Dakota Access pipeline," the senators wrote, citing research by Oil Change International that found the pipeline would lock in 101.4 million metric tons of carbon per year—the equivalent of roughly 30 new coal plants.

"If there is one profound lesson that Indigenous people have taught us, it is that all of us as human beings are part of nature," the letter concludes. "We will not survive if we continue to destroy nature."

The letter is published in full below.

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Dear President Obama:

We are writing to respectfully request that you direct the Army Corps of Engineers to require a full environmental impact statement for the Lake Oahe crossing of the Dakota Access Pipeline that includes meaningful tribal consultation. In light of the decision of the Court of Appeals for the D.C. Circuit to reject the Standing Rock Sioux Tribe's request for a temporary halt to construction, the project's current permits should be suspended and all construction stopped until a complete environmental and cultural review has been completed for the entire project.

We applaud your administration taking action to deny the authorization of construction on Army Corps-owned land and under Lake Oahe pending a review of prior decisions under the National Environmental Policy Act and government-to-government consultation with the tribes. In addition, we appreciate the administration's decision to reassess the way the federal government incorporates tribal concerns regarding permitting decisions more broadly. This is a longstanding problem, and these efforts must bring about long overdue, meaningful change.

Unfortunately, the pipeline company, Energy Transfer Partners, is committed to completing construction, despite a request from the U.S. Department of Justice for a temporary halt to construction around Lake Oahe.

Over the past several weeks, hundreds of Native American tribes have mobilized in unprecedented solidarity to draw attention to the pipeline's encroachment on sacred lands. Nationally, there has been a groundswell of opposition to the project. The pipeline's construction is not only a violation of tribal treaty rights, but has the potential to cause more damage to sacred land. Until there has been full and meaningful tribal consultation, all pipeline permits and easements should be revoked or denied.

In addition, not unlike the Keystone XL pipeline, the Dakota Access will have a significant impact on our climate. All fossil fuels infrastructure projects of this significance must be subjected to a test to consider the long term climate impacts. As such, there must be a serious consideration of the full potential climate impacts of this pipeline prior to the Army Corps of Engineers approving any permits or easements for the Dakota Access pipeline. According to Oil Change International, the Dakota Access pipeline would have the same impact on the planet as adding 21.4 million more cars to our roads, or 30 new coal plants.

We support the tribes along the pipeline route in their fight against the Dakota Access pipeline project. It is imperative that the Corps' permitting process be transparent and include public notice and participation, formal and meaningful tribal consultation, and adequate environmental review. Until that occurs, construction of this project must be halted.

If there is one profound lesson that indigenous people have taught us, it is that all of us as human beings are part of nature. We will not survive if we continue to destroy nature.

Further

Lord, what would John Lennon have made of the Trump monster? Marking Thursday's 36th anniversary of Lennon's murder, Yoko Ono posted a plea for gun control, calling his death "a hollowing experience" and pleading, "Together, let's bring back America, the green land of Peace." With so many seeking solace in these ugly times, mourns one fan, "Oh John, you really should be here." Lennon conceded then, and likely would now, "Reality leaves a lot to the imagination."